Mitochondrial DNA--all things bad?

Abstract excerpt

Mutations in mitochondrial DNA (mtDNA) are undoubtedly associated with a diverse spectrum of human disorders. More controversially, it has been claimed that they accumulate during ageing, and that they are responsible for an age-related decline in bioenergetic function and tissue viability. Here, we review the evidence for this assertion, concluding that claims for the age-accumulation of mtDNA mutations are...

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